5fa4ce6fa8
Instead of cached_state. surface_commit for a synchronized sub-surface either commits the transaction or merges it into the parent surface's transaction (if the parent is a synchronized sub-surface itself). This should fix or at least improve the behaviour of nested synchronized sub-surfaces. Also change wl_subsurface_set_desync: * Commit sub-surface transactions separately. This may allow some of them to be applied earlier in some cases. * Commit transaction only for descendant sub-surfaces which become newly de-synchronized themselves. v2: * Drop unused function prototypes v3: * Use g_clear_pointer for surface->sub.transaction. v4: * Use g_steal_pointer instead of g_clear_pointer. (Sebastian Wick, Jonas Ådahl) v5: (Carlos Garnacho) * Add spaces between type casts and values. * Use (gpointer *) instead of (void**). v6: (Jonas Ådahl) * Use g_clear_object in meta_wayland_transaction_entry_merge_into. * Use meta_wayland_transaction_entry_free in meta_wayland_transaction_merge_into. * Fix alignment of meta_wayland_transaction_merge_pending_state parameters. * Remove unused meta_wayland_transaction_add_state declaration. v7: * Use meta_wayland_surface_state_new in meta_wayland_transaction_merge_pending_state. Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1880>
Mutter
Mutter is a Wayland display server and X11 window manager and compositor library.
When used as a Wayland display server, it runs on top of KMS and libinput. It implements the compositor side of the Wayland core protocol as well as various protocol extensions. It also has functionality related to running X11 applications using Xwayland.
When used on top of Xorg it acts as a X11 window manager and compositing manager.
It contains functionality related to, among other things, window management, window compositing, focus tracking, workspace management, keybindings and monitor configuration.
Internally it uses a fork of Cogl, a hardware acceleration abstraction library used to simplify usage of OpenGL pipelines, as well as a fork of Clutter, a scene graph and user interface toolkit.
Mutter is used by, for example, GNOME Shell, the GNOME core user interface, and by Gala, elementary OS's window manager. It can also be run standalone, using the command "mutter", but just running plain mutter is only intended for debugging purposes.
Contributing
To contribute, open merge requests at https://gitlab.gnome.org/GNOME/mutter.
It can be useful to look at the documentation available at the Wiki.
The API documentation is available at:
- Meta: https://gnome.pages.gitlab.gnome.org/mutter/meta/
- Clutter: https://gnome.pages.gitlab.gnome.org/mutter/clutter/
- Cally: https://gnome.pages.gitlab.gnome.org/mutter/cally/
- Cogl: https://gnome.pages.gitlab.gnome.org/mutter/cogl/
- CoglPango: https://gnome.pages.gitlab.gnome.org/mutter/cogl-pango/
Coding style and conventions
See HACKING.md.
Git messages
Commit messages should follow the GNOME commit message
guidelines. We require an URL
to either an issue or a merge request in each commit. Try to always prefix
commit subjects with a relevant topic, such as compositor: or
clutter/actor:, and it's always better to write too much in the commit
message body than too little.
Default branch
The default development branch is main. If you still have a local
checkout under the old name, use:
git checkout master
git branch -m master main
git fetch
git branch --unset-upstream
git branch -u origin/main
git symbolic-ref refs/remotes/origin/HEAD refs/remotes/origin/main
License
Mutter is distributed under the terms of the GNU General Public License, version 2 or later. See the COPYING file for detalis.